Validate with a previously validated survey: 1) new survey to everyone, 2) old survey to everyone, 3) correlate. Correlation: measures the strength and direction of a relationship between two things, observed, cannot interfere causation. Experiment: experimentally manipulating a iv to see its impact on a dv, is controlled ( impact of x on y while holding z"s constant), can infer causation: sorenson. 50 questions/statements the lower the score, the better your self-esteem split half correlation split randomly into two sets of 25 questions (set 1 and set 2) correlate the two halves internal consistency. Predictions: two sets of the sorenson will correlate with each other. 10 questions higher is better correlating with sorenson to measuring the validity. Predictions: people who obtain high scores on the sorensen (low self esteem) self-esteem questionnaire will report lower scores on the rosenburg self-esteem scale. Describe the two correlation experiments * lab question* Copy and paste table in excel file in box.